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Low loss lumped-element inductors made from granular aluminum
Vishakha Gupta, Patrick Winkel, Neel Thakur +5
Lumped-element inductors are an integral component in the circuit QED toolbox. However, it is challenging to build inductors that are simultaneously compact, linear and low-loss wi…
Quantum Error Correction of Qudits Beyond Break-even
Benjamin L. Brock, Shraddha Singh, Alec Eickbusch +5
Hilbert space dimension is a key resource for quantum information processing. A large Hilbert space is not only an essential requirement for quantum error correction, but it can al…
Quantum Control of an Oscillator with a Kerr-cat Qubit
Andy Z. Ding, Benjamin L. Brock, Alec Eickbusch +10
Bosonic codes offer a hardware-efficient strategy for quantum error correction by redundantly encoding quantum information in the large Hilbert space of a harmonic oscillator. Howe…
Benchmarking the readout of a superconducting qubit for repeated measurements
S. Hazra, W. Dai, T. Connolly +4
Readout of superconducting qubits faces a trade-off between measurement speed and unwanted back-action on the qubit caused by the readout drive, such as degradation and leaka…
A mid-circuit erasure check on a dual-rail cavity qubit using the joint-photon number-splitting regime of circuit QED
Stijn J. de Graaf, Sophia H. Xue, Benjamin J. Chapman +8
Quantum control of a linear oscillator using a static dispersive coupling to a nonlinear ancilla underpins a wide variety of experiments in circuit QED. Extending this control to m…
Superconducting Quantum Memory with a Suspended Coaxial Resonator
Lev Krayzman, Chan U Lei, Suhas Ganjam +3
A promising way to store quantum information is by encoding it in the bosonic excitations of microwave resonators. This provides for long coherence times, low dephasing rates, as w…